Notification: This cell line has been renamed. It was formerly known as "HEK-Dual? hTLR9 (NF/IL8)". The cat. code (hkd-htlr9ni) remains unchanged.
This product is for internal research use only. Additional rights may be available. Please visit InvivoGen’s Terms and Conditions.NF-κB–SEAP and IL-8–Lucia reporter HEK293 cells expressing human TLR9

Signaling pathways in HEK-Blue-Lucia? hTLR9 cells

INVIVOGEN ALSO OFFERS:
? HEK-Blue? TLR cells: TLR reporter cells
? TLR9 ligands: for TLR studiesInvivoGen offers a human embryonic kidney 293 (HEK293)-derived cell line, specifically designed to assess the distinct role of the human Toll-like receptor 9 (hTLR9):— HEK-Blue-Lucia? hTLR9 cells* These cells were generated from the HEK-Blue-Lucia? Null cell line harboring two inducible reporter genes. This feature allows the double readout of the NF-κB/AP-1 pathway, by monitoring the SEAP (secreted embryonic alkaline phosphatase) or Lucia luciferase activities. HEK-Blue-Lucia? hTLR9 cells also stably express the hTLR9 genes. Due to a triple knockout (KO) of TLR3, TLR5, and TNFR, this cell line allows for the independent study of TLR9. Stimulation of HEK-Blue-Lucia? hTLR9 cells with TLR9 agonists (e.g. oligonucleotides (ODNs)) triggers the activation of the artificial NF-κB-inducible promoter and the subsequent production of SEAP. It also promotes the expression of Lucia luciferase, which is knocked in (KI) downstream of the endogenous (more physiological) IL-8 promoter (see figures). Of note, their parental cell line HEK-Blue-Lucia? Null may slightly respond to TLR9-specific agonists due to the weak endogenous expression of TLR9 in HEK293 cells (data not shown).IL-8 (interleukin 8) is a chemokine produced in response to TLR agonists in an NF-κB/AP-1-dependent manner [1-2]. This feature enables the double readout study of the NF-κB/AP-1 pathway, by monitoring the activity of SEAP and Lucia luciferase using QUANTI-Blue? Solution (SEAP detection reagent) or QUANTI-Luc? 4 Lucia/Gaussia (luciferase detection reagent), respectively. Thus, you may choose the readout depending on your laboratory equipment utilizing a spectrophotometer for SEAP or a luminometer for Lucia luciferase detection.
Toll-Like Receptor 9 (TLR9) is one of the most studied pattern recognition receptors (PRRs) for nucleic acid sensing. It is an endosomal receptor that triggers NF-κB- and IRF-mediated pro-inflammatory responses [3].